I'm quoting from memory right now, as I've had to leave it home today while flying.
- 3 different sizes of Philips head
- 1 x straight driver (smaller/thinner than the built-in on the SAK itself)
- 3 different Torx bits
- 1 x Allen bit
I can't remember the exact sizes of the last two, but they've always been the right sizes for me, working in technology.